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Wastewater treatment system and wastewater treatment method based on photoelectric Fenton-biological enhancement

A wastewater treatment system and bioaugmentation technology, applied in biological water/sewage treatment, special compound water treatment, water/sewage treatment, etc., can solve the problems of combination mechanism confusion, unstable process operation, increased equipment complexity and operation management Difficulty and other issues

Pending Publication Date: 2017-06-13
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned patents use multiple repeated oxidations, the process route is complicated, and the optimization effect that biological treatment and subsequent processes may play is not considered
[0004] Chinese patents "a baffle reactor and its method for treating sewage (CN200610012070)" and "integrated high-concentration organic wastewater treatment device (CN200310100513.1)" involve multiple couplings of anaerobic and aerobic processes, increasing The complexity of the equipment and the difficulty of operation and management, and there is no advanced oxidation process
[0005] The existing combined treatment process of chemical wastewater has complex and lengthy process routes, chaotic combination mechanism, low removal efficiency of characteristic organic pollutants that are difficult to degrade, unstable process operation, and failure to meet environmental protection requirements, etc.

Method used

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  • Wastewater treatment system and wastewater treatment method based on photoelectric Fenton-biological enhancement
  • Wastewater treatment system and wastewater treatment method based on photoelectric Fenton-biological enhancement
  • Wastewater treatment system and wastewater treatment method based on photoelectric Fenton-biological enhancement

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Experimental program
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Effect test

Embodiment 1

[0048] The production wastewater produced by a chemical enterprise needs to be treated. The high-concentration chemical wastewater before treatment is COD≤8000mg / L, pH 6.5~8.5, SS≤300mg / L, NH 3 -N≤100mg / L, TP≤2.5mg / L, characteristic pollutant concentration chlorobenzene≤100mg / L. Chemical wastewater COD≤2500mg / L, pH 6.5~8.5, SS≤300mg / L, NH 3-N≤50mg / L, TP≤1.0mg / L, characteristic pollutant concentration chlorobenzenes≤10mg / L. The effluent is required to meet the secondary standard of "Jiangsu Provincial Chemical Industry Discharge Standards for Major Water Pollutants" (DB32 / 939-2006). The effluent indicators require COD≤120mg / L, pH 6.5-8.5, SS≤150mg / L, NH 3 -N≤25mg / L, TP≤1.0mg / L, characteristic pollutant concentration chlorobenzene≤1.0mg / L.

[0049] Attached figure 1 The wastewater treatment system based on photoelectric Fenton-bioaugmentation includes pre-aeration tank 1, photoelectric Fenton reactor 2, degassing neutralization tank 3, coagulation sedimentation tank 4, regul...

Embodiment 2

[0065] The production wastewater produced by a chemical enterprise needs to be treated. The high-concentration chemical wastewater before treatment is COD≤10000mg / L, pH 6.5~8.5, SS≤300mg / L, NH 3 -N≤100mg / L, TP≤2.0mg / L, characteristic pollutant concentration nitrobenzene≤100mg / L. Low concentration chemical wastewater COD≤3000mg / L, pH 6.5~8.5, SS≤300mg / L, NH 3 -N≤50mg / L, TP≤1.0mg / L, characteristic pollutant concentration nitrobenzene≤10mg / L. The effluent is required to meet the secondary standard of "Jiangsu Provincial Chemical Industry Discharge Standards for Major Water Pollutants" (DB32 / 939-2006). The effluent indicators require COD≤120mg / L, pH 6.5-8.5, SS≤150mg / L, NH 3 -N≤25mg / L, TP≤1.0mg / L, characteristic pollutant concentration nitrobenzene≤1.0mg / L.

[0066] Attached figure 1 The wastewater treatment system based on photoelectric Fenton-bioaugmentation includes pre-aeration tank 1, photoelectric Fenton reactor 2, degassing neutralization tank 3, coagulation sedimentati...

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Abstract

The invention discloses a wastewater treatment system and a wastewater treatment method based on photoelectric Fenton-biological enhancement. The system comprises a preaeration tank (1), a photoelectric Fenton reactor (2), a degassing neutralizing tank (3), a coagulative precipitation tank (4), an adjustment tank (5), a microencapsulation biological fluidized bed (6) and an immobilization biological active carbon bed (7) which are connected in sequence through water pipes. The photoelectric Fenton-biological enhancement-based wastewater treatment system is reasonable in structural design, convenient to operate, high in working efficiency, low in cost and good in wastewater treatment effect and orderly, and organically combines physical and chemical treatment, biochemical treatment and guarantee treatment; the photoelectric Fenton reactor, the microencapsulation biological fluidized bed and the immobilization biological active carbon bed support and promote one another functionally, so that the removal efficiency for refractory characteristic organic pollutants is over 98 percent, the sludge yield is low, the sludge treatment cost is low, the sewage treatment effect is good, and the wastewater treatment system based on photoelectric Fenton-biological enhancement has important significance for environmental protection.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a photoelectric Fenton-biologically enhanced wastewater treatment system and a wastewater treatment method thereof, belonging to the technical field of wastewater treatment. Background technique [0002] Chemical wastewater has the characteristics of large changes in water quantity and quality, poor biodegradability, difficult to degrade, and complex and diverse pollutants. Generally, appropriate pretreatment methods are adopted according to the actual wastewater quality, such as flocculation, micro-electrolysis, adsorption, and photocatalysis. Destroy refractory organic matter in wastewater, improve the biodegradability of wastewater, and then use biological methods to treat chemical wastewater. [0003] From the existing patent information, the Chinese patent "A Method and Device for Multiple Oxidation Treatment of Wastewater" (CN106145483A) discloses a method and device for mul...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F2305/026C02F2001/007C02F7/00C02F3/34C02F3/30C02F1/66C02F1/52C02F1/4672C02F1/20
Inventor 金建祥韩香云潘梅李朝霞孙浩
Owner YANCHENG INST OF TECH
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